This week's TV has a lot of exciting stuff in store. Falling Skies is back, and we're going to get to see what happened after last season's crazy cliffhanger. Spider-Man and Wolverine are doing a "Freaky Friday" storyline together. Everything comes to a head in the Thundercats finale! Syfy unleashes... the Piranhaconda! And there's a brand new animated series in which Kristen Schaal confronts monsters, mysteries and the wonder of time travel.

Check out new clips from Adventure Time, Iron Man, Falling Skies, and more!

Today:

Adventure Time (7:30 PM, Cartoon Network):
Another rather weird-sounding episode:

"Beyond This Earthly Realm" – When Finn finds a porcelain lamb, it transports him to the spirit world.

Check out a brand new clip! There are also new episodes of Regular Show, Annoying Orange and Mad.

Eureka (8 PM, Syfy):
The Carter-Allison romance is heating up as the final season races towards its conclusion. Here's what to expect from "In Too Deep":

A submarine mishap ruins a romantic outing for Carter and Allison, and Jo must sort through pranks at Global Dynamics to save them.

That's followed by a brand new (to Americans) episode of Lost Girl ("Death Didn't Become Him.")

Teen Wolf (10 PM, MTV):
Here's what to expect from "Ice Pick":

Scott tries to keep Derek from creating new werewolves; Argent officially begins Allison's training; the new creature in town takes another victim.

Also on TV tonight: A brand new Alien Surf Girls on Teennick at 8:30 PM.

Tuesday:

Level Up! (8 PM, Cartoon Network):
Somehow we missed the fact that this show had come back last week, which we're sorry about. This week, it's "Leveling Up":

Dante must take responsibility when his procrastinating causes a character to leak from the game.

That's preceded by Total Drama Revenge of the Island at 7:30 PM, with the pleasing episode title "Truth or Laser Shark."

Also on TV tonight: A brand new Alien Surf Girls on Teennick at 8:30 PM. At 9 PM, Travel has a new Mysteries at the Museum.

Wednesday:

Iron Man: Armored Adventures (8:30 PM, Nicktoons):
Yes, the "young Tony Stark" show is back, and Iron Man has to team up with a surprising ally:

To keep reality itself from being torn apart, Iron Man must team up with Mandarin to stop Doctor Doom after he captures the Ninth Mahkluan Ring... and Howard Stark too!

Check out a brand new clip at left.

Through The Wormhole with Morgan Freeman (10 PM, Science):
And this show just keeps getting trippier and trippier. This time around: "Is the Universe Alive?" Good question!

Could our universe's collection of stars, galaxies, and black holes follow the same rules of existence as biological life? The cosmos itself may be a superorganism, a collection of separate bodies that act like a single being - just like ants in a colony. One scientist believes cities are superorganisms and perhaps our universe is a super-scaled up version of these metropolises.

One bold thinker hypothesizes that our universe may have emerged from a set of laws similar to biological evolution. Like we pass DNA from parent to child, the cosmos may also produce offspring that inherit its genetic make up. And the seeds of these cosmic births could exist inside black holes, the endpoints in the death of massive stars.

If the universe is a replicating, living being, one visionary thinks he's found its pulse. Energetic particles called neutrinos may propel our universe to expand and contract every trillion years - like a slow beating heart - as it moves from one life cycle to another. And if it has a heart, it must have a brain. Our universe could function like a giant quantum computer, processing and storing information on everything we see around us. And we might be able to find its program.

But could space and time be merely a physical illusion created by our own minds? One renegade researcher contends the universe is alive in our imaginations. Without us, it ceases to exist.

Also on TV tonight: A brand new Johnny Test on Cartoon Network at 7:30 PM, and a brand new Alien Surf Girls on Teennick at 8:30 PM.

Thursday:

Tron: Uprising (9 PM, Disney XD):
Here's what to expect from "The Renegade, Part 2."

Beck and Cutler continue to battle in the games and show surprising strength and popularity when they keep winning, leaving the Occupation to take extreme measures. Beck and Cutler must make a brave escape in order to survive, or face being derezzed by General Tesler. Meanwhile, Zed and Mara are on a mission to find Perl, who has stolen a light cycle of great value to Able.

That's followed at 9:30 PM by a new episode of the dystopian cartoon Motorcity.

Saving Hope (9 PM, NBC):
The first episode of this show was everything we thought it would be, although there was one great line of dialogue: "I'm having an out of body experience... in a tux." In the second episode, though, it looks like things are moving forward quickly, as Dr. Harris figures out how to communicate with his colleagues by talking to a little kid who keeps slipping in and out of a coma. It's like the ultimate game of Coma Telephone!

Also on TV tonight: A brand new Dragon Ball GT on Nicktoons at 8 PM, followed by a brand new Monsuno at 8:30. There's also — yes — a brand new Alien Surf Girls on Teennick at 8:30 PM. And the sixth season premiere of Burn Notice on USA at 9 PM.

Friday:

The Link (7 PM, National Geographic):
This time, this show is following the technological links from ploughs to super-cars.

Gravity Falls (9:55 PM, Disney):
No new Phineas and Ferb tonight, but instead there's the premiere of a brand new show full of monsters and time travel. Guest starring Kristen Schaal! Here's what to expect:

Gravity Falls is just west of weird, slightly east of eerie and always north of normal, in a fresh new comedy series that follows city kids and twins Dipper and Mabel Pines who are sent to spend the summer with their eccentric Great Uncle Stan (aka Grunkle Stan) who runs a tourist trap called The Mystery Shack in a remote northwestern town where nothing is what it seems. There are creatures in the forest, there are monsters in the lake and even time traveling adventures.

Here's a fairly adorable clip.

Saturday:

Thundercats (9:30 AM, Cartoon Network):
It's the season finale! (And maybe series finale? Not sure if they're making a second season.) Here's what happens: "The team try to keep Mumm-Ra away from the Tech Stone."

Legend of Korra (11 AM, Nickelodeon):
It's the penultimate week of season one — next week is a one-hour season finale. Here's a promo for the final three episodes, focusing largely on the finale. (So beware spoilers.) And here's what happens this week:

Korra recovers from her abduction, although she can't rest for long. Republic City is under attack by equalists! Will she be able to stop Amon?

Piranhaconda (9 PM, Syfy):
It seemed like Syfy original movies were getting slightly more... sensible for a while there. And now, thank goodness, they're getting back to their crazy monster movie roots — and once again, Roger Corman is the producer! The involvement of people like Roger Corman is the main reason to adore things like Piranhaconda and Sharktopus. It feels like a link to our heritage. Here's the description:

Part fish! Part snake! All killer! In B-movie icon Roger Corman's latest, a hybrid creature - half piranha and half anaconda — attacks a movie crew on location near her nest when her egg is stolen. Now they must outrun and kill the deadly piranhaconda as well as stop the mad scientist who stole the egg - before they all become dinner. Stars Michael Madsen (Reservoir Dogs, Kill Bill: I & II) and Rachel Hunter (The Benchwarmers).

Also on TV tonight: A brand new Kaijudo: Legend of the Duel Masters on The Hub at 8 PM, in which kids learn to fight by controlling monsters.

Sunday:

Spider-Man and Wolverine must overcome their clashing styles and personalities to team up against super-villains Mesmero and Sabretooth. When they find themselves literally looking through each other's eyes, 'team-up' takes on a whole new meaning

Falling Skies (9 PM, TNT):
This alien invasion show returns with a two-hour season premiere, and we'll have our spoiler-free preview in the next couple of days, along with more interviews with the cast and crew. For now, here's a sneak peek, and the official synopsis:

Three months after Tom has gone aboard the alien ship, Hal and Ben are still helping to protect the remaining members of the 2nd Mass, under the command of Captain Weaver while continuing the search for their father. Meanwhile Matt struggles to find his place in the world and Anne takes a more maternal role with the Mason boys.

True Blood (9 PM, HBO):
Now that you've seen just how much stuff this show is putting on the table to get you to come back and take another bite, here's what they've got for you next week:

Eric and Bill try to keep their wits about them when they're put through the interrogation wringer at the Vampire Authority headquarters in New Orleans. Meanwhile, Pam recalls her first meeting with Eric in early 20th-century San Francisco; Alcide turns his back on Marcus' wolf pack; Emma's grandmother comes between Sam and Luna; Steve Newlin wants what he thinks belongs to Jessica; and Jason's womanizing comes back to haunt him.

Also on TV tonight: There's the season finale of Mythbusters on Discovery at 9 PM, and a new Metalocalpyse on Adult Swim, just after midnight.